METAL EXPANSION JOINTS
2200 Centre Park CourtStone Mountain, GA 30087877.850.2662 Toll free770.413.5680 Phone770.413.5643 Fax03/2018 2018 Precision Hose, Inc.METALEXPANSIONJOINTS
A LONG LEGACY OFPRECISION PRODUCTSMETALEXPANSIONJOINTSPrecision Hose & Expansion Joints is one of a very fewAmerican companies that manufacture a completeline of metal hose, wire braid, round metal expansionjoints, metallic flue duct expansion joints, non-metallicflue duct expansion joints and rubber pressure pipingexpansion joints. With over 65 years of being in themetal hose and expansion joint business–dating backto the early 1950’s–the owners of Precision Hose& Expansion Joints have over 130 years combinedexperience in this industry.QUALITY ASSURANCEOur 105,000 square foot manufacturing facility islocated on 6 acres in Stone Mountain, Georgia. Theplant was designed totally for the state of the artmanufacturing of metal hose and expansion joints.We would certainly welcome you to visit our companyon your next visit to the Atlanta area.SIZE RANGES AVAILABLEQuality, service and fair pricing is the basis on howwe operate our business.MATERIALS AVAILABLEPrecision Hose & Expansion Joints manufactures to the highest quality standards in the industry. All expansionjoints and bellows are 100% tested either by hydro, pneumatic, liquid penetrant, or mass spectrometer. We canoffer additional tests, if required, such as cycle life, burst test, ultrasonic, chemical analysis, radiography, shock andvibration, and charpy impact testing. Precision Hose & Expansion Joints continually strives for better products andto improve the efficiency of our service without compromising standards. These product and quality improvementsare from the standard catalog item to the more complicated aerospace product lines. Precision Hose & ExpansionJoints designs all expansion joints and bellows to EJMA, ASME B31.1, ASME B31.3 and ASME section 8.Our expansion joints are manufactured tothe highest quality standards in the industry.The metallic bellows products are available from 2-1/2”diameter through 100” diameter and available as singleply and multi-ply bellows. The single ply bellows areoffered from a thickness of .008” to .125” and the multiply bellows are available up to a thickness of .160”combined wall thickness.The standard material for bellows is type 321 stainlesssteel, but there are many other alloys available. Stainlesssteel is available in types 304L, 310, 316, and 316L. Thenickel alloys available are 400, 600, 625, 800. Pleasecontact the factory for other types of alloys available.DELIVERYNormal delivery for standard bellows and expansionjoints is three to five days —depending on the size,quantity and type of alloy. Please contact the factoryfor delivery information on exotic alloys and/or highquantity orders.770.413.5680 / precisionhose.com770.413.5680 / precisionhose.com1
A LONG LEGACY OFPRECISION PRODUCTSMETALEXPANSIONJOINTSPrecision Hose & Expansion Joints is one of a very fewAmerican companies that manufacture a completeline of metal hose, wire braid, round metal expansionjoints, metallic flue duct expansion joints, non-metallicflue duct expansion joints and rubber pressure pipingexpansion joints. With over 65 years of being in themetal hose and expansion joint business–dating backto the early 1950’s–the owners of Precision Hose& Expansion Joints have over 130 years combinedexperience in this industry.QUALITY ASSURANCEOur 105,000 square foot manufacturing facility islocated on 6 acres in Stone Mountain, Georgia. Theplant was designed totally for the state of the artmanufacturing of metal hose and expansion joints.We would certainly welcome you to visit our companyon your next visit to the Atlanta area.SIZE RANGES AVAILABLEQuality, service and fair pricing is the basis on howwe operate our business.MATERIALS AVAILABLEPrecision Hose & Expansion Joints manufactures to the highest quality standards in the industry. All expansionjoints and bellows are 100% tested either by hydro, pneumatic, liquid penetrant, or mass spectrometer. We canoffer additional tests, if required, such as cycle life, burst test, ultrasonic, chemical analysis, radiography, shock andvibration, and charpy impact testing. Precision Hose & Expansion Joints continually strives for better products andto improve the efficiency of our service without compromising standards. These product and quality improvementsare from the standard catalog item to the more complicated aerospace product lines. Precision Hose & ExpansionJoints designs all expansion joints and bellows to EJMA, ASME B31.1, ASME B31.3 and ASME section 8.Our expansion joints are manufactured tothe highest quality standards in the industry.The metallic bellows products are available from 2-1/2”diameter through 100” diameter and available as singleply and multi-ply bellows. The single ply bellows areoffered from a thickness of .008” to .125” and the multiply bellows are available up to a thickness of .160”combined wall thickness.The standard material for bellows is type 321 stainlesssteel, but there are many other alloys available. Stainlesssteel is available in types 304L, 310, 316, and 316L. Thenickel alloys available are 400, 600, 625, 800. Pleasecontact the factory for other types of alloys available.DELIVERYNormal delivery for standard bellows and expansionjoints is three to five days —depending on the size,quantity and type of alloy. Please contact the factoryfor delivery information on exotic alloys and/or highquantity orders.770.413.5680 / precisionhose.com770.413.5680 / precisionhose.com1
Metal Expansion JointsTypes of Expansion JointsSINGLE UNRESTRAINEDPRESSURE BALANCED ELBOW EXPANSION JOINTThis expansion joint is the simplest one available and comes withone bellows section and end connections. This type of expansionjoint requires the most control of the adjacent piping in regardsto anchors and guiding.This expansion joint is designed to not only restrain the pressurethrust but in addition balances the pressure thrust so as notto have anchoring of the adjacent piping or equipment. Thispressure balanced elbow expansion joint can be designed assingle or universal depending on how much lateral movement isrequired.UNIVERSAL EXPANSION JOINTThis expansion joint has two bellows sections connected bya center pipe section. This design allows for large amountsof lateral deflection. The universal can also allow for axial andangular movements in addition to the lateral movement. Thisexpansion joint does not come with the hardware to resistpressure thrust. Like the single unrestrained expansion jointthe universal expansion joint must be properly anchored andsupported.SINGLE TIED EXPANSION JOINT2770.413.5680 / precisionhose.comGIMBAL EXPANSION JOINTThis expansion joint has a single bellows section. The gimbalexpansion joint is designed to allow angular rotation in any planeby using two pairs of hinges connected to a common centralfloating ring. The gimbal expansion joint is usually used in pairs oftwo or in combination with the hinged expansion joint.HINGED EXPANSION JOINTThis expansion joint is exactly like the single unrestrainedexpansion joint but it is provided with tie rods. When addingtie rods to the expansion joint it stops the bellows fromoverextending. The tie rods act as limit rods and has stops setto allow axial movement to a specifically designed movement.This expansion joint has a single bellows section and is designedto allow angular rotation in one plane only. The hinge hardwareis rigid in the axial direction so as not to allow the expansion jointto allow axial movement in piping systems. The hinged expansionjoint is usually used in pairs of two or in combination with agimbal expansion joint.TIED UNIVERSAL EXPANSION JOINTIN-LINE PRESSURE BALANCED EXPANSION JOINTThis expansion joint is exactly like the universal expansion jointbut tie rods have been designed into the unit. By adding the tierods you restrain pressure thrust. The pressure balance expansionjoint will not accept external axial movement without overcomingthis pressure thrust force.This expansion joint is unusual in its’ design in that it absorbslateral, axial, and angular movement. This in-line pressurebalanced expansion joint is designed for cases when anchoringto the piping system is not feasible or pressure loads are too highfor equipment like pumps and turbines.770.413.5680 / precisionhose.com3
Metal Expansion JointsTypes of Expansion JointsSINGLE UNRESTRAINEDPRESSURE BALANCED ELBOW EXPANSION JOINTThis expansion joint is the simplest one available and comes withone bellows section and end connections. This type of expansionjoint requires the most control of the adjacent piping in regardsto anchors and guiding.This expansion joint is designed to not only restrain the pressurethrust but in addition balances the pressure thrust so as notto have anchoring of the adjacent piping or equipment. Thispressure balanced elbow expansion joint can be designed assingle or universal depending on how much lateral movement isrequired.UNIVERSAL EXPANSION JOINTThis expansion joint has two bellows sections connected bya center pipe section. This design allows for large amountsof lateral deflection. The universal can also allow for axial andangular movements in addition to the lateral movement. Thisexpansion joint does not come with the hardware to resistpressure thrust. Like the single unrestrained expansion jointthe universal expansion joint must be properly anchored andsupported.SINGLE TIED EXPANSION JOINT2770.413.5680 / precisionhose.comGIMBAL EXPANSION JOINTThis expansion joint has a single bellows section. The gimbalexpansion joint is designed to allow angular rotation in any planeby using two pairs of hinges connected to a common centralfloating ring. The gimbal expansion joint is usually used in pairs oftwo or in combination with the hinged expansion joint.HINGED EXPANSION JOINTThis expansion joint is exactly like the single unrestrainedexpansion joint but it is provided with tie rods. When addingtie rods to the expansion joint it stops the bellows fromoverextending. The tie rods act as limit rods and has stops setto allow axial movement to a specifically designed movement.This expansion joint has a single bellows section and is designedto allow angular rotation in one plane only. The hinge hardwareis rigid in the axial direction so as not to allow the expansion jointto allow axial movement in piping systems. The hinged expansionjoint is usually used in pairs of two or in combination with agimbal expansion joint.TIED UNIVERSAL EXPANSION JOINTIN-LINE PRESSURE BALANCED EXPANSION JOINTThis expansion joint is exactly like the universal expansion jointbut tie rods have been designed into the unit. By adding the tierods you restrain pressure thrust. The pressure balance expansionjoint will not accept external axial movement without overcomingthis pressure thrust force.This expansion joint is unusual in its’ design in that it absorbslateral, axial, and angular movement. This in-line pressurebalanced expansion joint is designed for cases when anchoringto the piping system is not feasible or pressure loads are too highfor equipment like pumps and turbines.770.413.5680 / precisionhose.com3
Metal Expansion JointsDefinitionsBellowsThe flexible element of an Expansion Joint consisting ofone or more convolutions.Control RodsDevices, usually in the form of rods or bars, attached tothe Expansion Joint assembly whose primary function isto distribute the movement between the two bellows of auniversal Expansion Joint. Control rods are not designed torestrain bellows pressure thrust.CoverPurge ConnectionsPurge connections, where required, are usually installedat the sealed end of each internal sleeve of an expansionjoint for the purpose of injecting a liquid or gas betweenthe bellows and the internal sleeve to keep the area clear oferosive and corrosive media and/or solids that could packthe convolutions. Purging may be continuous, intermittentor just on start-up or shut down, as required. These aresometimes called aeration connections.Shipping DevicesA device used to provide limited protection of the exteriorsurface of the bellows of an expansion joint from foreignobjects or mechanical damage. A cover is sometimesreferred to as a shroud.Rigid support devices installed on an expansion joint tomaintain the overall length of the assembly for shipment.These devices may also be used to precompress, preextendor laterally offset the bellows. They should not be used toresist pressure thrust during testing.ConvolutionSlotted HingesThe smallest flexible unit of a bellows. The total movementcapacity of a bellows is proportional to the number ofconvolutions.Equalizing and Reinforcing RingsDevices used on some expansion joints fitting snugly in theroots of the convolutions. The primary purpose of thesedevices is to reinforce the bellows against internal pressure.Equalizing rings are made of cast iron, steel, stainless steelor other suitable alloys and are approximately “T” shaped incross section. Reinforcing or root rings are fabricated fromtubing or solid round bars of carbon steel, stainless steel orother suitable alloys.Flanged EndsThe ends of an expansion joint equipped with flanges for thepurpose of bolting the expansion joint to the mating flangesof adjacent equipment or piping.Internal SleeveA device which minimizes contact between the inner surfaceof the bellows of an expansion joint and the fluid flowingthrough it. These devices have also been referred to as linersor baffles.Limit RodsDevices, usually in the form of rods or bars, attached tothe expansion joint assembly whose primary function isto restrict the bellows movement range (axial, lateral andangular) during normal operation. In the event of a mainanchor failure, they are designed to prevent bellows overextension or over-compression while restraining the fullpressure loading and dynamic forces generated by theanchor failure.Devices installed as diametrically opposed pairs on anExpansion Joint permitting axial and one plane angularmovement. Slotted hinges can be designed to performas control devices, distributing movements between twobellows of a universal Expansion Joint but do not restrainpressure thrust. They may also be designed as limitingdevices, restricting the bellows movement range andcan restrain the full pressure loading and dynamic forcesgenerated by an anchor failure. These devices can be used totransmit extraneous loads and forces, such as system deadweight, wind and seismic loads transverse to the ExpansionJoint axis, rather than across the flexible bellows element.StabilizerA device, internally or externally attached to the ExpansionJoint assembly, whose primary function is to increase thestability of a universal Expansion Joint assembly.TangentsThe straight un-convoluted portions at the end of thebellows.Tangent ReinforcementA reinforcing member located around the circumference ofthe bellows tangent for the purpose of reducing excessivepressure stresses which could lead to circumferentialyielding.Tie RodsDevices, usually in the form of rods, or bars, attached tothe expansion joint assembly whose primary function is tocontinuously restrain the full bellows pressure thrust duringnormal operation while permitting only lateral deflection.Angular rotation can be accommodated only if two tie rodsare use and located 90 opposed to the direction of rotation.Weld EndsThe ends of an expansion joint equipped with pipe suitablybeveled for welding to adjacent equipment or piping.4770.413.5680 / precisionhose.com770.413.5680 / precisionhose.com5
Metal Expansion JointsDefinitionsBellowsThe flexible element of an Expansion Joint consisting ofone or more convolutions.Control RodsDevices, usually in the form of rods or bars, attached tothe Expansion Joint assembly whose primary function isto distribute the movement between the two bellows of auniversal Expansion Joint. Control rods are not designed torestrain bellows pressure thrust.CoverPurge ConnectionsPurge connections, where required, are usually installedat the sealed end of each internal sleeve of an expansionjoint for the purpose of injecting a liquid or gas betweenthe bellows and the internal sleeve to keep the area clear oferosive and corrosive media and/or solids that could packthe convolutions. Purging may be continuous, intermittentor just on start-up or shut down, as required. These aresometimes called aeration connections.Shipping DevicesA device used to provide limited protection of the exteriorsurface of the bellows of an expansion joint from foreignobjects or mechanical damage. A cover is sometimesreferred to as a shroud.Rigid support devices installed on an expansion joint tomaintain the overall length of the assembly for shipment.These devices may also be used to precompress, preextendor laterally offset the bellows. They should not be used toresist pressure thrust during testing.ConvolutionSlotted HingesThe smallest flexible unit of a bellows. The total movementcapacity of a bellows is proportional to the number ofconvolutions.Equalizing and Reinforcing RingsDevices used on some expansion joints fitting snugly in theroots of the convolutions. The primary purpose of thesedevices is to reinforce the bellows against internal pressure.Equalizing rings are made of cast iron, steel, stainless steelor other suitable alloys and are approximately “T” shaped incross section. Reinforcing or root rings are fabricated fromtubing or solid round bars of carbon steel, stainless steel orother suitable alloys.Flanged EndsThe ends of an expansion joint equipped with flanges for thepurpose of bolting the expansion joint to the mating flangesof adjacent equipment or piping.Internal SleeveA device which minimizes contact between the inner surfaceof the bellows of an expansion joint and the fluid flowingthrough it. These devices have also been referred to as linersor baffles.Limit RodsDevices, usually in the form of rods or bars, attached tothe expansion joint assembly whose primary function isto restrict the bellows movement range (axial, lateral andangular) during normal operation. In the event of a mainanchor failure, they are designed to prevent bellows overextension or over-compression while restraining the fullpressure loading and dynamic forces generated by theanchor failure.Devices installed as diametrically opposed pairs on anExpansion Joint permitting axial and one plane angularmovement. Slotted hinges can be designed to performas control devices, distributing movements between twobellows of a universal Expansion Joint but do not restrainpressure thrust. They may also be designed as limitingdevices, restricting the bellows movement range andcan restrain the full pressure loading and dynamic forcesgenerated by an anchor failure. These devices can be used totransmit extraneous loads and forces, such as system deadweight, wind and seismic loads transverse to the ExpansionJoint axis, rather than across the flexible bellows element.StabilizerA device, internally or externally attached to the ExpansionJoint assembly, whose primary function is to increase thestability of a universal Expansion Joint assembly.TangentsThe straight un-convoluted portions at the end of thebellows.Tangent ReinforcementA reinforcing member located around the circumference ofthe bellows tangent for the purpose of reducing excessivepressure stresses which could lead to circumferentialyielding.Tie RodsDevices, usually in the form of rods, or bars, attached tothe expansion joint assembly whose primary function is tocontinuously restrain the full bellows pressure thrust duringnormal operation while permitting only lateral deflection.Angular rotation can be accommodated only if two tie rodsare use and located 90 opposed to the direction of rotation.Weld EndsThe ends of an expansion joint equipped with pipe suitablybeveled for welding to adjacent equipment or piping.4770.413.5680 / precisionhose.com770.413.5680 / precisionhose.com5
Metal Expansion JointsTEMPERATURE CORRECTION FACTORSTemperature CorrectionFactors for ElevatedTemperature ApplicationsTHERMAL EXPANSION DATAMaterialTemperature 00100011001200130014001500As the service temperature increases, themaximum pressure a hose assembly canwithstand decreases. The material from whichthe hose is made and the method of fittingattachment (mechanical, soldered, welded,silver brazed) determines the maximumpressure at which an assembly can be used.Multiply the listed correction factor timesthe hoses room temperature rating todetermine elevated temperature maximumworking 0Vacuum HGSATURATED STEAM PRESSURE TEMPERATURE6SaturatedSteamTemperature FSaturatedSteamTemperature FSaturatedSteamTemperature FSaturatedSteamTemperature 696705770.413.5680 / precisionhose.comTemp. 525155015751600Carbon Steel AusteniticCarbon-Moly StainlessLow-ChromeSteels(thru 3 Cr Mo) 18Cr 8 3017.6918.0818.47––––Linear thermal expansion between 70º f and indicated temperature, inches/100 feetMaterials5 Cr Mothru9 Cr Mo12 Cr17Cr27 Cr310SS25 Cr20 NiMonel (400)67 Ni30 Cr3-1/2NickelNickel 200Alloy 800,825Alloy600,625, 691CopperBrass70 Cu30 NOTES:1. Table shows expansion resulting from change in temperature from 70 F to indicated temperature.2. This Table is for information only and it is not to be implied that materials are suitable for all temperature ranges shown.3. The thermal expansion values in this table may be interpolated to determine values for intermediate temperatures.770.413.5680 / precisionhose.com7
Metal Expansion JointsTEMPERATURE CORRECTION FACTORSTemperature CorrectionFactors for ElevatedTemperature ApplicationsTHERMAL EXPANSION DATAMaterialTemperature 00100011001200130014001500As the service temperature increases, themaximum pressure a hose assembly canwithstand decreases. The material from whichthe hose is made and the method of fittingattachment (mechanical, soldered, welded,silver brazed) determines the maximumpressure at which an assembly can be used.Multiply the listed correction factor timesthe hoses room temperature rating todetermine elevated temperature maximumworking 0Vacuum HGSATURATED STEAM PRESSURE TEMPERATURE6SaturatedSteamTemperature FSaturatedSteamTemperature FSaturatedSteamTemperature FSaturatedSteamTemperature 696705770.413.5680 / precisionhose.comTemp. 525155015751600Carbon Steel AusteniticCarbon-Moly StainlessLow-ChromeSteels(thru 3 Cr Mo) 18Cr 8 3017.6918.0818.47––––Linear thermal expansion between 70º f and indicated temperature, inches/100 feetMaterials5 Cr Mothru9 Cr Mo12 Cr17Cr27 Cr310SS25 Cr20 NiMonel (400)67 Ni30 Cr3-1/2NickelNickel 200Alloy 800,825Alloy600,625, 691CopperBrass70 Cu30 �––––––-3.00-2.
Joints designs all expansion joints and bellows to EJMA, ASME B31.1, ASME B31.3 and ASME section 8. Our expansion joints are manufactured to the highest quality standards in the industry. SIZE RANGES AVAILABLE The metallic bellows products are available from 2-1/2” diameter through 10
This is the sixth edition of IAPMO PS 51, Expansion Joints and Flexible Expansion Joints for DWV Piping Systems. This Standard supersedes IAPMO PS 51‐2016, Expansion Joints and Flexible Expansion Joints . additional input from stakeholders from industry, academia, regulatory agencies, and the public at large. Upon . S. Peters Plumbing .
Tefl on Expansion Joints, Fabric Expansion Joints, Metal Hose and Pump Connectors. Unafl ex is one of the few companies in the world that can offer a complete expansion joint and hose product line. This catalog outlines the selection and installation of our Metal Bellows Type Expansion Joints and
Fabric expansion joints absorb twisting movements caused by differential heating of ducting. Money savings Usually one fabric expansion joint replaces two metal joints. Also, metal joints are generally too big to be shipped in one piece and must be assembled on the job. Fabric expansion joints get to the job site complete, ready to go to work.
Rectangular metal expansion joints are designed to compensate for axial and lateral movements over a broad cross section of operating conditions. Rectangular expansion joints can be man-ufactured with convolutions more than 200mm (8") of deepth. Rectangular metal expansion joints are used in: Power Generations Steelwork
the pressure thrust. Expansion joints produced with these re-straining parts are called restrained expansion joints. Restrained lateral expansion joints must be free from axial movements and to be adjusted only for lateral movements. Advantages of Universal Tied Expansion Joints Bellows design according to EJMA coding system.
Expansion joints with a wall thickness of up to 6 mm and for an operating pressure of up to 0.3 bar are elastomer expansion joints. These are gas-tight and drip-proof. Rubber expansion joints are used at higher pressure. In multilayer expansion joints, the inner insulating layers in the clamping area lead to marginal diffusion. The bellows
Elastomeric Expansion Joints. Series 300 & 320 Application specific design. Eccentric and . Concentric reducers. Design considerations for . Fabric Expansion Joints Holz Rubber offers a complete line of expansion joints . including elasto-meric, high-temp-erature fabric and metallic . expansion joints.
EXPANSION JOINT SOLUTIONS MIGUMAX MIGUA 360 SERVICE Introducing MIGUTRANS 4-5 Innovations at MIGUA 6-8 Expansion joints according to joint width/load bearing capacity/ alphabetically sorted 9 Expansion joints according to application areas 10-11 Solid, full metal expansion joint constructions Expansion joints for high load requirements .
